US7971441B2 - Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system - Google Patents
Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system Download PDFInfo
- Publication number
- US7971441B2 US7971441B2 US11/924,675 US92467507A US7971441B2 US 7971441 B2 US7971441 B2 US 7971441B2 US 92467507 A US92467507 A US 92467507A US 7971441 B2 US7971441 B2 US 7971441B2
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- US
- United States
- Prior art keywords
- accumulator
- dryer
- receiver
- refrigerant
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/044—Condensers with an integrated receiver
- F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
Definitions
- HVAC heating ventilating and air conditioning
- a conventional air-conditioning system for a vehicle may include an engine driven compressor that compresses a refrigerant before it is directed into a condenser in order to remove heat from the refrigerant.
- the refrigerant is then directed from the condenser through an expansion device, such as a thermal expansion valve or an orifice tube, before being directed through an evaporator in the vehicle heating, ventilation and air conditioning (HVAC) module.
- HVAC heating, ventilation and air conditioning
- the conventional air-conditioning systems also typically include an accumulator between the evaporator and compressor, or a receiver/dryer between the condenser and expansion device.
- the accumulator and receiver/dryer remove moisture from the refrigerant and store extra refrigerant.
- the accumulator may also help to keep liquid refrigerant from entering the compressor, reducing the risk that liquid refrigerant will damage the compressor. Accordingly, the accumulator and receiver/dryer help to provide optimum operating conditions for the system.
- An embodiment contemplates an integrated receiver/dryer-accumulator-internal heat exchanger for use in an air conditioning portion of a vehicle HVAC system.
- the integrated receiver/dryer-accumulator-internal heat exchanger may comprise an accumulator portion having an accumulator inlet configured to be in fluid communication with an evaporator, and an accumulator outlet configured to be in fluid communication with a compressor; and a receiver/dryer portion mounted within the accumulator portion and having receiver/dryer inlet configured to be in fluid communication with a first portion of a condenser and a receiver/dryer outlet configured to be in fluid communication with a sub-cooler portion of the condenser.
- HVAC heating, ventilation and air-conditioning
- the HVAC system may comprise a compressor; a condenser having a first portion in fluid communication with the compressor, and a sub-cooler portion; an expansion device in fluid communication with the sub-cooler portion; an evaporator in fluid communication with the expansion device; and an integrated receiver/dryer-accumulator-internal heat exchanger.
- the integrated receiver/dryer-accumulator-internal heat exchanger may have an accumulator portion with an accumulator inlet in fluid communication with the evaporator and an accumulator outlet in fluid communication with the compressor, and a receiver/dryer portion mounted within the accumulator portion and having receiver/dryer inlet in fluid communication with the first portion and a receiver/dryer outlet in fluid communication with the sub-cooler portion of the condenser.
- An embodiment contemplates a method of operating a vehicle heating, ventilation and air conditioning system, the method comprising the steps of: compressing a refrigerant before directing the refrigerant through a first portion of a condenser; directing the refrigerant from the first portion through a receiver/dryer portion of an integrated receiver/dryer-accumulator-internal heat exchanger; directing the refrigerant from the receiver/dryer portion through a sub-cooler portion of the condenser; directing the refrigerant from the sub-cooler through an expansion device; directing the refrigerant from the expansion device through an evaporator; directing the refrigerant from the evaporator into an accumulator portion of the integrated receiver/dryer-accumulator-internal heat exchanger surrounding the receiver/dryer portion; exchanging heat between the refrigerant in the accumulator portion and refrigerant in the receiver/dryer portion; and directing refrigerant from the accumulator portion to a compressor.
- An advantage of an embodiment is that the condenser performance and coefficient of performance in vapor compression refrigerant systems are improved. Thus, the evaporator cooling capacity is enhanced.
- An advantage of an embodiment is that the integrated heat exchanger cools the liquid out of the first portion of the condenser with the cold vapor out of the evaporator, thus increasing sub-cooling.
- An advantage of an embodiment is that the refrigerant line from the accumulator to the compressor can be located so that it starts from near the top of the accumulator to ensure that only vapor enters the compressor, thus reducing concerns with slugging, which can be harmful to the compressor.
- An advantage of an embodiment is that equivalent comfort, as compared to conventional air conditioning systems, can be attained using lower compressor power consumption, which may lead to improved fuel economy for the vehicle. It may also delay the onset of high fan speed request, and may improve noise, vibration and harshness (NVH) concerns.
- NASH noise, vibration and harshness
- FIG. 1 is a schematic view of an air conditioning portion of a vehicle HVAC system.
- FIG. 2 is a schematic view of an integrated receiver/dryer-accumulator-internal heat exchanger for use in the HVAC system of FIG. 1 .
- HVAC heating, ventilation and air conditioning
- the air conditioning portion 18 includes an evaporator 24 located in a passenger cabin HVAC module 26 .
- a refrigerant line 28 directs refrigerant from the evaporator 24 to an integrated receiver/dryer-accumulator-internal heat exchanger (RDAIX) 30 .
- a refrigerant line 32 directs refrigerant from the RDAIX 30 to a refrigerant compressor 34 .
- a refrigerant line 36 directs refrigerant from the compressor to a condenser 38 .
- the refrigerant in the condenser 38 is directed through the (RDAIX) 30 and back into the condenser 38 .
- the RDAIX 30 may be mounted on the condenser 38 , if so desired.
- a refrigerant line 40 directs refrigerant from the condenser 38 to an expansion device 42 .
- the expansion device 42 is preferably a thermal expansion valve, but maybe an orifice tube, if so desired.
- a refrigerant line 44 directs refrigerant from the expansion device 42 back to the evaporator 24 , completing a refrigerant loop 46 .
- the RDAIX 30 includes an accumulator portion 50 generally shaped like a cylindrical tank, within which is mounted a receiver/dryer portion 52 which may also be shaped like a cylindrical tank. Structural supports 54 may hold the receiver/dryer portion 52 in place relative to the accumulator portion 50 . These structural supports 54 may take any shape or form desired for maintaining the spacing of the receiver/dryer portion 52 relative to the accumulator portion 50 . An arcuate dome 56 is mounted in an upper portion of the accumulator portion 50 above the receiver/dryer portion 52 .
- the accumulator portion 50 includes an accumulator inlet 58 that is located adjacent to the dome 56 near the top 60 of the accumulator portion 50 .
- the refrigerant line 28 directs refrigerant to the accumulator inlet 58 .
- the accumulator portion 50 includes an accumulator outlet 62 that is also located near the top 60 .
- the accumulator outlet 62 connects to refrigerant line 32 .
- the accumulator outlet 62 may also include a conduit 64 extending to the underside of the dome 56 , with an inlet 66 of this conduit 64 facing upward under the dome 56 .
- the accumulator portion 50 may also include heat transfer elements 68 , such as fins or turbulator tapes, located adjacent to the receiver/dryer portion 52 .
- the receiver/dryer portion 52 includes a receiver/dryer inlet 70 for receiving refrigerant from a first portion 74 of the condenser 38 , and a receiver/dryer outlet 72 for directing refrigerant from the receiver/dryer portion 52 into a sub-cooler portion 76 of the condenser 38 .
- a desiccant 78 may be located in the receiver/dryer portion 52 between the inlet 70 and the outlet 72 .
- the refrigerant compressor 34 When the refrigerant compressor 34 is activated, it compresses the refrigerant and directs it through refrigerant line 36 into the first portion 74 of the condenser 38 . Air flow (indicated by phantom arrow 82 in FIG. 1 ) through the condenser 38 absorbs heat from the refrigerant. The refrigerant is then directed from the first portion 74 , through the receiver/dryer inlet 70 , into the receiver portion 52 of the RDAIX 30 . As it flows through the desiccant 78 , moister is removed from the refrigerant. Also, heat is transferred (indicated by the phantom double headed arrows 84 in FIG.
- the refrigerant After leaving the condenser 38 , the refrigerant is directed through refrigerant line 40 to the expansion device 42 , where the pressure, and hence temperature, are lowered. The cooled refrigerant is then directed through refrigerant line 44 into the evaporator 24 . Air flow (indicated by the phantom arrow 81 in FIG. 1 ) through the evaporator 24 gives off heat to the refrigerant. The refrigerant is then directed through refrigerant line 28 to the RDAIX 30 .
- the refrigerant enters the accumulator portion 50 through the accumulator inlet 58 and impinges on the dome 56 . This allows for the liquid refrigerant to settle to the bottom of the accumulator portion 50 while the vapor rises to the top.
- the liquid refrigerant settling to the bottom of the accumulator portion 50 will flow around the heat transfer elements 68 along the outer surface of the receiver/dryer portion 52 , allowing for heat transfer from the refrigerant in the receiver/dryer portion 52 into the refrigerant in the accumulator portion 50 .
- the outer surface of the receiver/dryer portion 52 and the heat transfer elements 68 form an integrated heat exchanger, indicated generally at 86 , within the RDAIX 30 .
- the refrigerant is then sucked from near the top 60 of the accumulator portion 50 to the compressor 34 .
- the refrigerant is sucked in through the upward facing inlet 66 from under the dome 56 .
- This refrigerant near the top 60 will be vapor and hence reduce or eliminate any potential compressor slugging concerns.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims (18)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/924,675 US7971441B2 (en) | 2007-10-26 | 2007-10-26 | Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system |
DE102008052457.3A DE102008052457B4 (en) | 2007-10-26 | 2008-10-21 | Integrated internal collector / dryer storage heat exchanger for a vehicle air conditioning system |
CN2008101707090A CN101419003B (en) | 2007-10-26 | 2008-10-24 | Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/924,675 US7971441B2 (en) | 2007-10-26 | 2007-10-26 | Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090107172A1 US20090107172A1 (en) | 2009-04-30 |
US7971441B2 true US7971441B2 (en) | 2011-07-05 |
Family
ID=40577271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/924,675 Active 2030-05-04 US7971441B2 (en) | 2007-10-26 | 2007-10-26 | Receiver/dryer-accumulator-internal heat exchanger for vehicle air conditioning system |
Country Status (3)
Country | Link |
---|---|
US (1) | US7971441B2 (en) |
CN (1) | CN101419003B (en) |
DE (1) | DE102008052457B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140373560A1 (en) * | 2013-06-24 | 2014-12-25 | Ford Global Technologies, Llc | Internal Heat Exchanger with Integrated Receiver/Dryer and Thermal Expansion Valve |
US9719706B2 (en) | 2012-02-24 | 2017-08-01 | Airbus Operations Gmbh | Accumulator arrangement with an integrated subcooler |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2975344B1 (en) * | 2011-05-20 | 2016-04-29 | Valeo Systemes Thermiques | APPARATUS FOR HEATING, VENTILATION AND / OR AIR CONDITIONING COMPRISING AN AIR CIRCULATION CHANNEL CONVERTING A HEAT EXCHANGER |
US20120291478A1 (en) * | 2011-05-20 | 2012-11-22 | Kia Motors Corporation | Condenser for vehicle and air conditioning system for vehicle |
US10144271B2 (en) * | 2016-09-30 | 2018-12-04 | GM Global Technology Operations LLC | Valve-in-receiver for a vehicle climate control system |
US10380915B2 (en) * | 2017-06-29 | 2019-08-13 | Stephen Sophorn Lim | Braille dot delivery system |
JP6760226B2 (en) * | 2017-07-31 | 2020-09-23 | 株式会社デンソー | Combined heat exchanger |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341092A (en) * | 1980-11-20 | 1982-07-27 | Liquid Modulators, Inc. | Liquid modulator |
DE19959566A1 (en) | 1999-12-10 | 2001-06-13 | Behr Gmbh & Co | Evaporation heat exchanger has evaporation structure designed as folded fin with parallel almost S-shaped folds forming internal channels and capillary gaps for liquid |
US6330810B1 (en) * | 2000-08-11 | 2001-12-18 | Showa Denko K.K. | Condensing apparatus for use in a refrigeration cycle receiver-dryer used for said condensing apparatus |
US6385994B2 (en) * | 1999-06-08 | 2002-05-14 | Visteon Global Technologies, Inc. | Accumulator for an air conditioning system |
DE102006007371A1 (en) | 2006-02-17 | 2007-08-23 | Bayerische Motoren Werke Ag | Vehicle air conditioning |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955375A (en) | 1974-08-14 | 1976-05-11 | Virginia Chemicals Inc. | Combination liquid trapping suction accumulator and evaporator pressure regulator device including a capillary cartridge and heat exchanger |
GB2386939A (en) | 2000-12-29 | 2003-10-01 | Visteon Global Tech Inc | Accumulator with an internal heat exchanger |
DE102005005187A1 (en) | 2005-02-03 | 2006-08-10 | Behr Gmbh & Co. Kg | Condenser for an air conditioning system, in particular a motor vehicle |
DE102005021787A1 (en) | 2005-05-11 | 2006-11-16 | Modine Manufacturing Co., Racine | Transcritical air-conditioning refrigerant e.g. carbon-di-oxide, treating apparatus for use in e.g. automobile, has flat multi-chamber tube extruded to extend straight over length of vessel |
-
2007
- 2007-10-26 US US11/924,675 patent/US7971441B2/en active Active
-
2008
- 2008-10-21 DE DE102008052457.3A patent/DE102008052457B4/en active Active
- 2008-10-24 CN CN2008101707090A patent/CN101419003B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341092A (en) * | 1980-11-20 | 1982-07-27 | Liquid Modulators, Inc. | Liquid modulator |
US6385994B2 (en) * | 1999-06-08 | 2002-05-14 | Visteon Global Technologies, Inc. | Accumulator for an air conditioning system |
DE19959566A1 (en) | 1999-12-10 | 2001-06-13 | Behr Gmbh & Co | Evaporation heat exchanger has evaporation structure designed as folded fin with parallel almost S-shaped folds forming internal channels and capillary gaps for liquid |
US6330810B1 (en) * | 2000-08-11 | 2001-12-18 | Showa Denko K.K. | Condensing apparatus for use in a refrigeration cycle receiver-dryer used for said condensing apparatus |
DE102006007371A1 (en) | 2006-02-17 | 2007-08-23 | Bayerische Motoren Werke Ag | Vehicle air conditioning |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9719706B2 (en) | 2012-02-24 | 2017-08-01 | Airbus Operations Gmbh | Accumulator arrangement with an integrated subcooler |
US20140373560A1 (en) * | 2013-06-24 | 2014-12-25 | Ford Global Technologies, Llc | Internal Heat Exchanger with Integrated Receiver/Dryer and Thermal Expansion Valve |
US9175883B2 (en) * | 2013-06-24 | 2015-11-03 | Ford Global Technologies, Llc | Internal heat exchanger with integrated receiver/dryer and thermal expansion valve |
Also Published As
Publication number | Publication date |
---|---|
DE102008052457B4 (en) | 2021-10-21 |
US20090107172A1 (en) | 2009-04-30 |
DE102008052457A1 (en) | 2009-05-28 |
CN101419003A (en) | 2009-04-29 |
CN101419003B (en) | 2011-03-23 |
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